It's very easy to measure flat surfaces using nothing more than your Android smartphone. The accelerometer in your device takes careful measure of its relationship to any surface, and bubble level apps can report this information back to you in a matter of seconds.

The lock screen on your mobile can do so much more than prevent unwanted fingers from tapping into your stuff. There are tons of great Android apps that'll swap the standard one on your device with a much snazzier, feature-packed replacement. Check them out!

In this article we’ve tried to bring together games from a wide spectrum to give you the best chance possible of finding something within a genre you like: reaction, strategy, adventure, brainteaser...